What color is #40FF00?

#40FF00 is a vivid green, closest to the named color Signal Green. It belongs to the green family of colors.

What is the RGB value of #40FF00?

The RGB value is 64, 255, 0: 64 red, 255 green and 0 blue on a 0 to 255 scale.

What is the complementary color of #40FF00?

The complementary color is #BF00FF, found by rotating the hue 180° on the color wheel.

Is black or white text better on #40FF00?

Black text. Black text has a contrast ratio of 15.52:1 and white text 1.35:1. WCAG asks for at least 4.5:1 for normal text.

#40FF00 color

#40FF00 rgb(64, 255, 0)

Shades of green

The hex color #40FF00 is a vivid green.

In the RGB color model it is made of 25.1% red, 100% green and 0% blue (64, 255, 0).

Its hue angle is 105°, with 100% saturation and 50% lightness. For print, the CMYK equivalent is 75% cyan, 0% magenta, 100% yellow and 0% black.

The closest named color is Signal Green (#33FF00), a difference of 0.4 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 15.52:1).

#40FF00 color codes

HEX	`#40FF00`
RGB	`rgb(64, 255, 0)`
RGB percent	`rgb(25.1%, 100%, 0%)`
HSL	`hsl(105, 100%, 50%)`
HSV / HSB	`hsv(105, 100%, 100%)`
CMYK	`cmyk(75%, 0%, 100%, 0%)`
CIE LAB	`lab(88.26, -81.46, 83.82)`
CIE LCH	`lch(88.26, 116.88, 134.18)`
CIE XYZ	`xyz(37.872, 72.606, 12.018)`
Decimal	`4259584`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #40FF00, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #40FF00	Ratio	AA	AAA	AA large
Sample text	15.52:1	Pass	Pass	Pass
Sample text	1.35:1	Fail	Fail	Fail

#40FF00 as text on	Ratio	AA	AAA	AA large
Sample text	1.35:1	Fail	Fail	Fail
Sample text	15.52:1	Pass	Pass	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #40FF00 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #40ff00; }
.text { color: #40ff00; }
.border { border: 2px solid #40ff00; }
.transparent { background-color: rgb(64 255 0 / 50%); }
.gradient { background: linear-gradient(to right, #40ff00, #00ff40); }

Background

Text color

Border

Similar colors

Questions

What color is #40FF00?: #40FF00 is a vivid green, closest to the named color Signal Green. It belongs to the green family of colors.
What is the RGB value of #40FF00?: The RGB value is 64, 255, 0: 64 red, 255 green and 0 blue on a 0 to 255 scale.
What is the complementary color of #40FF00?: The complementary color is #BF00FF, found by rotating the hue 180° on the color wheel.
Is black or white text better on #40FF00?: Black text. Black text has a contrast ratio of 15.52:1 and white text 1.35:1. WCAG asks for at least 4.5:1 for normal text.